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Briggs-Fan
Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1198
Experience:  over 15 years experience in small engine repair, multiple certifications
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Ihave a John deere mower with a model Cv13S engine. Engine

Customer Question

Ihave a John deere mower with a model Cv13S engine. Engine runs fine until it gets warm
after about 15 miutes it dies & will not start until it sits for about 1to2 hours.
Submitted: 7 months ago.
Category: Small Engine
Expert:  Briggs-Fan replied 7 months ago.
Hi my name is ***** ***** welcome to Just Answer. Have you tested for spark after it does ? From the symptoms you are describing it does sound like your losing spark or compression once it's hot. A bad coil will produce spark until it's hot then it will not until it cools off . If it's a compression issue it will have good compression until it's hot , then as it gets hot the valves expand and they lose their seal so it drops in compression . The way to check both of these is check for spark using a spark tester right after it dies . If it has spark I would check compressing next . Using a compression tester check compression before starting . Being a 4 cycle it should have well over 60 psi , most riders have 100 lbs , run it till it dies then recheck the compression . If it has 90 psi before running and 55 psi after it dies you know it's a valve issue .
Expert:  Briggs-Fan replied 7 months ago.
Hi have you had a chance to check for loss of spark or compression ?